Improvement in feeding mechanisms for carding-engines



J. G.- FREEMAN.

FEEDING-MECHANISM FOR CARDING-ENGINES.

N-o.170,842. Patented 1m. 7,18-7'5.

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UNITED STATES P TENT OFFICE.

JOSIAH G. FREEMAN, OF WORCESTER, ASSIGNOR TO GEORGE S. HARWOOD- ANDGEORGE H. QUINCY, OF BOSTON, MASSACHUSETTS;

IMPROVEMENT IN FEEDING MECHANISMS FOR CARDlNG-ENGINES.

Specification forming part of Letters Patent No. 170,842, dated December7, 1875; application filed October 16, 1875.

To all whom it may concern:

Be it known that I, JOSIAH G. FREEMAN,

of Worcester, Massachusetts, have invented certain new and usefulImprovements in Feeding Mechanisms for Oarding-Machines, of which thefollowing is a specification:

This invention relates to that I kind of feeding mechanism forcarding-machines, represented, for example, in the patents of Bolette,No. 43,959, of August 23, 1864., and Harwood, No. 159,923, of February16, 1875.

In machinery of this class there is now employed a spiked roll or workerintermediate between the lifting-apron and the lower feedapron, whichspiked worker is used, in conjunction with a spiked fan above it, toopen and prepare the stock for the carding-machine.

In working this machine on certain kinds of stock, I have found a greattendency in long fibers of wool or waste to wind round this spiked rollor worker, and, by gradual accumulation, to become so matted as tointerfere with the proper working of the machine. The design of myimprovement is to obviate this difficulty. To this end I dispense withthe roll and use in lieu thereof teeth or spikes, which have a risingand fallingmovement at stated intervals, through a clearing shield orplate, which, when the teeth retire below or behind it, clears the teethof the stock that may have accumulated on them.

The nature of my invention, and the manner in which the same is or maybe carried into effect, will be understood by reference to theaccompanying drawing, in which- Figure 1 is a longitudinal verticalsection of a machine embodying my improvements. Fig. 2 is a perspectiveview of the teeth or spikes and their clearing-plate detached.

A is the receiving-box; B, the wire-gauze bottom; 0, the spikedlifting-apron; D, the fan-beater; E, the spiked fan; G and H, the upperand lower feedaprons, which, together, constitute the packing-chamber I.These parts are combined and operate in the usual way, and require nodescription here. The spiked roll or worker hereinbefore referred to hasbeen usually placed between the upperend of the lifting-apron and thelower feed or slat apron. This roll I dispense with, and in lieu thereofI make use of a row of teeth or spikes, a, set at suitable intervalsapart in a proper support-in this instance a bar, N, which, thus armedwith teeth or spikes, I shall term the picker-bar. The bar is suitablysupported in guides in the sides of the machine-frame in such mannerthat it may be moved up and down. Extending from the spiked liftingapronO to the lower feed-apron H, and above the'picked bar, is fixed theshield or plate M, in which are formed holes b, which correspond innumber and position ,with the teeth or spikes a, and exactly registertherewith. When the teeth are in their lowest position their upper endsare below the upper surface of the plate, or at least are so farretracted as to cause them to be cleared of the adhering fibers of woolor waste. When on the other hand, the teeth are elevated in workingposition, they protrude nearly their length through the holes in theplate. This movement of the picker-bar may be produced in a variety ofways, one of which is represented in the drawing. Below the picker-baris a shaft, 0, revolved by suitable means, and at each end of the shaftis a cam, P, upon which the pickerbar rests. Each cam is a disk cut awayat a point, 0, to form a depression into which the picker-bar may atintervals drop. When the machine is in operation the cams, as the shaftrevolves, will so lift the picker-bar that the teeth will protrudethrough the perforated shield M, and thus answer the same purpose inopening the stock as was intended by the use of the spike-roll formerlyemployed. The teeth fall once at each revolution of the cams, and theywill thus be perfectly cleared by the shield M, so that there can be noaccumulation of fibers, and the difiiculty above referred to is entirelyremoved.

Having described my invention, what I claim and desire to secure byLetters Patent, 1s-

I. In card-feedin g mechanisms, substantially such as described, thecombination of a series of opening teeth or spikes, and a shield orplate, through apertures or perforations in which the teeth or spikesare at intervals protruded and withdrawn, substantially as and for thepurposes set forth.

2 I I v 170,942

Th-e-picker-barend shield through which picker-bar at stated intervalsin the manner teeth- 0r spikes cf'said her work, as described, setforth.

Y in combination with the lifting-apron, the 'In testimonywhereof I heve's'ig'ned In'y feed-apron, and the spiked fan, substantially I name tothis specification before two subscribas set forth. ing witnesses.

3. The combination, with the picker-bar I JOSIAH G. FREEMAN.

shield and. the picker-bar, of the revolving 'Wi'tnesees:

cams, arranged and operating substantially JOHN A. No s;- as described,to effect the rise andfall of the R. B. BROWN.

